Philip I, Landgrave of Hesse

Philip I
Portrait by Hans Krell, 1534
Landgrave of Hesse
Reign11 July 1509 – 31 March 1567
PredecessorWilliam II
SuccessorWilliam IV (Hesse-Kassel)
Louis IV (Hesse-Marburg)
Philip II (Hesse-Rheinfels)
George I (Hesse-Darmstadt)
Born13 November 1504
Marburg, Landgraviate of Hesse, Holy Roman Empire
Died31 March 1567 (aged 62)
Kassel, Landgraviate of Hesse, Holy Roman Empire
Spouse
(m. 1523; died 1549)
(m. 1540; died 1566)
Issue
HouseHouse of Hesse
FatherWilliam II, Landgrave of Hesse
MotherAnna of Mecklenburg-Schwerin
ReligionLutheran (since 1524)
Roman Catholic (until 1524)
SignaturePhilip I's signature

Philip I, Landgrave of Hesse (13 November 1504 – 31 March 1567), nicknamed der Großmütige (lit.'the Magnanimous'), was a German nobleman and champion of the Protestant Reformation, notable for being one of the most important of the early Protestant rulers in Germany. He was one of the main belligerents in the War of the Katzenelnbogen Succession.